Update using the Internet Use your PS4™ system's network update feature to update the system.Update using a disc Use an update file contained on a game disc to update the system.Your system automatically checks over the Internet whether you have the latest version of the system software.
From the function screen, select (Notifications) When you play a disc that contains a later version of the system software, a screen is displayed to guide you through the update process. Update using a computer For the standard update procedure, follow the steps below.Upgrades to 10.04 LTS should be only to 10.10 (no longer supported), or directly to 12.04 LTS. Also, it will prove to be useful, as you rightly suggest, for installation on multiple systems. However, I think you will need to have the ISO file on another medium (such as another hard drive, or a USB/CD/DVD) Booting from Grub2: https://help.ubuntu.com/community/Grub2/ISOBoot Installing over the network: Is it possible to install Ubuntu through network?And finally: https://help.ubuntu.com/community/Installation#Installation_without_a_CD Though if you have your /home in a separate partition (or any other non-standard filesystem configurations like that), this will not work.... Though you can simple upgrade incrementally through the normal method: though you may have to check your settings.Update using a computer This update method can be used if your PS4™ system is not connected to the Internet.Download the update file to your computer, and then save it on a USB storage device.